A conventional sheet of glass seldom has a unique and distinctive appearance. In contrast to the unremarkable look of that see-through sheet, the bullet proof glass in the window of an armored vehicle can have a noticeably uncharacteristic appearance.
For instance, it might have an added transparency. Normally such an object would tend to be a bit less transparent than a conventional glass sheet. Unlike that pane, it would contain numerous layers of a BP resistant fluid. Those layers would surround a vital and strong core.
That core could be one of two different materials. It could have a polycarbonate base, or it could be composed of a transparent film. In the latter case, the 200 to 400 micron thickness of the core would guarantee it effectiveness. It would have the ability to catch glass and bullet fragments, thus preventing their entrance into the vehicle’s interior sections.
A window’s bullet-stopping glass might have a special sort of edgework. The Dartz Factory in Russia puts a unique type of edgework on each of its vehicles. The person who rides in a car from the Dartz Factory sees the world through gold plated windows.
The makers of bullet-halting glass do not force their customers to accept an item with a standardized shape. They realize that their wealthy clients are willing to pay for production of something with a customized shape. For example, their client might have a limousine in which two of the rear side windows copy a circular pattern. Alternatively, a similar car might have a window section that copies the pattern of a right-sided triangle. In either case, the bullet-proofing of all windows would dictate the need for customized shapes.
The decision to fit a car’s windows with bullet-resistant glass does not eliminate the need for consideration of other potential dangers. Suppose that same vehicle had to drive through a wall of flames. It would need to demonstrate the properties of fire protected glassware. Suppose some attacker were to take a swipe at the see-through bullet-proofing. In order to insure the safety of those inside, the hit vehicle would need to have a splinter free element at each window.
Moreover, incorporation of all the options mentioned above would not cease discussion as to the possible introduction of other glass-like variations. The construction of a layered and fluid filled object does not preclude the making of a curved sheet. Nor does it rule out production of a water repellant item. Either of those qualities could be requested by the wealthy client that has agreed to finance the installation of bullet proof glass in a particular motor-driven vehicle.
In light of all those options, it is obvious that a bullet-stopping car, limousine, van or SUV could have a very unique looking window. The varied look of that see-through structure would reflect the changing appearance of bullet proof glass. However, that changed appearance would not denote the existence of a reduced functionality. Each strong sheet would be able to halt a speeding projectile.